Chandeller-hoist.



' v WITNESSES 1 j v Q 51'Z Q hfllfi f gw A. T. PRESCOTT.

Patented Jan. 4, 1916.

lM/E/VTOR ATTORNEY A. T. PRESCOTT. CHANDELIER HOIST.

APPLICATION FILED OCT. 2, I912.

Patented Jan. 4, 1916.

2 SHEETS-SHEET 2.

ATTORNEY Ill] - UNITED STATES ENT;

ARTHUR T. PRESCOTT, or EAsT ORANGE, NEW aER-SEY, ssroivon. To GEORGE, H.

FROTHINGHAM COMPANY, or NEW YORK, Y.,- A coEron TIoN' 01'? NEW YORK...

To all whom it may concern Be it known that I, ARTHUR T. PRESCOTT,

a citizen ofthe United States, and a resident of chandeliers or othersimilar fixtures.

The object of my invention is to provide a hoisting apparatus of thecharacter and for the purpose above specified, that shall be simple anddurable in construction and positive in operation.

In the drawings, Figure 1. is a partially sectional elevationillustrating a hoisting apparatus, constructed inaccordance with myinvention, and the way in which it is used. Fig. 2 isa detail view, on alarger, scale, of the supporting member on which the weight of thechandelier or other fixture is supported when the hoisting apparatus ofFig. 1 is notin use. Fig. 3 is an end elevation of the hoist of Fig. 1'with one of the standards broken away to disclose thewinding drum andits driving gear wheel. Fig. 4

is a plan view of the parts shown in Fig. 1. Fig. 5 is a front elevationat right angles to Fig. 3 of the hoist proper. Fig. 6is a plan view of amodified form of hoist which also embodies my invention.

Like characters of reference designate corresponding parts in all thefigures.

Referring to Figs. 1 to 5 inclusive, of the drawings, 10 is asubstantially horizontal supporting surface suchas a ceiling from whicha plurality of chandeliers or other fixtures 11 (only one of which isshown) depend.

My invention is specially adapted for use with large and heavychandeliers such as are found in theaters, churches and other publicbuildings, although'its use is not restricted to any specific fixture orclass of fixtures.

It is my special aim to avoid the use of cumbersome and dangerouscounterweights,

to affix the chandelier firmly in position and at the same time toprovide for lowering the chandelier for repairs or cleaning, with arelatively small expenditure of time and 8X- pense.

one of the chains 12', extending'downwardly 14, the center line of thehole being substan- CHANDELIER-HOIST. f

Specification of Letters Patent. r P t Jan. 6. Application fiIedOctober2,1912. Serial No. 723,485. I

' The chandelier i is directly Seaman by l -ings14 and support a bar orrod 17, which is thrust through the lower part of the link or shackle13; The'brackets 15 and 16are so considerable vibration.

shown, it will of course beunderstood that a similar, or correspondinglysuspended, fixture will be supported by each of the rods'17,

through each of the holes 14." A sheave or pulley 20 is rotativelysupported in brackets 21 adjacent to each of the holes or openingstially tangent to the groove of the sheave in eaohcase. M p

- A-hoist or Windlass is mounted on the surface 10 and comprisesvertical standards or brackets 31 which are secured to a channel iron orbeam constituting a base 32, a hori- Zontal cross tie 33, a'winding drum34, a gear wheel 35, a pinion 36am]. guide sheaves 37 and 38. Thesheaves 37 and'38 are respectively mounted onbrackets 39, 40 which areriveted or otherwise attached to the base 32. The winding drum 34 ismounted between the uprights'3land is provided with a spiral surfacegroovein the usual manner to guide the cable as it is wound onto and offof the drum. The gear wheel 35 issecured to the. drum'34 and meshes withthe pinion If naIed. Cranks or levers 43 are secured to the respectiveends of the shaft 41. A cable 44 is partially wound on the drum 34,extends over one of the sheaves20 when in use and is provided with ahook45 which is adapted to, engage the upper loop of the link or shackle'13.

The operation of the device is as follows: Assuming that the chandelieris supported spaced and't'he rod or bar 17 is of such length i that thechandelieris verysecurely held in position although it may be subjectedto by the rod or bar 17 and that it is desired to lower the chandelier,the cable 14 is placed in the groove of the adjacent sheave 20 and thehook 4-5 is hooked into the upper loop of the shackle 13. If the sheaveis in the plane of rotation of the winding drum, the cable will bestretched from the drum to the sheave, between the guide sheaves 37 and38 of the hoist but if the chandelier, which it is desired to lower, islocated to one side or the other of the plane of the winding drum, thecable will be held in the groove of one of the guide sheaves as shown inbroken lines in Fig. 1. The hoist will next be operated by turning thecranks or handles 13 so as to raise the chandelier slightly and take itsweight from the rod or bar 17, which may then be removed. When the baris removed, the chandelier may be lowered by turning the cranks orhandles in the opposite direction.

It is obvious that the low pitch worm and wheel will hold the chandelierin what ever position it is left by the operator of the hoist so that noother support for it is necessary during the usual operations ofcleaning and renewing parts. If other types of gearing were employedthis advantage would not be present but the chandelier would tend tooverhaul the hoist and there would be danger of injuring it unlesshandled by a particularly careful operator.

After the chandelier has been cleaned or repaired, it may be returned toits original position by operating the hoist until the shackle 13extends through the hole 14L sufiiciently to permit the rod or bar 17 tobe replaced.

Attention is specially directed to the fact that a single hoist isadapted to be utilized I in raising and lowering any one of a largenumber of considerably distributed fixtures. The holes or openings 14are preferably concealed by inverted bells 18 which are applied to theceiling in a well known manner.

The guide sheaves 37 and 38 may be rendered unnecessar r b )ivotallvsecurin the hoist to the surface on which it is mounted as shown in Flg.6. By this means the hoist may always be swung into such position thatthe plane of the drum is substantially parallel to the plane of thesheave that is associated with the chandelier to be operated upon.

I intend that variations which do not depart from the spirit of myinvention shall be included in its scope.

What I claim is:

1. In combination with a horizontal supporting surface having pluralityof holes, a plurality of sheaves distributed thereon and respectively adacent to the holes, chains extending through the holes and cross pinsadapted to cooperate with the chains for adjustably supporting the chainupon the surface, a single hoist adapted to raise any one of the chainsto permit the resetting of its cross pins and comprising a stationarystandard, a winding drum rotatively supported thereon, a crank andinterposed gearing for rotating the drum, a cable adapted to be wound onthe drum and to be connected to one of the chains, said standard havingrelatively stationary pulleys spaced apart for guiding the cable ontoand off of the drum from any angle determined by the position of thechain which it is desired to adjust, and each of said chains beingadapted to support a chandelier.

2. In combination with a horizontal supporting surface having aplurality of holes, a plurality of sheaves distributed thereon andrespectively adjacent to the holes, a pair of brackets located onopposite sides of each hole, a chain extending through each hole and across pin extending through a link of each chain and seated in a pair ofsaid brackets, whereby the chains are supported from the surface; asingle hoist adapted to raise any one of the chains and its attachmentsand comprising a standard, a winding drum rotatively supported thereon,a worm gear wheel affixed to the drum, a worm gear meshing with thewheel, a crank or lever for turning the worm gear and a cable adapted tobe wound on the drum and to be connected to any one of said chains, saidstandard having relatively stationary means for guiding the cable ontoor off of the drum from any angle, and said chains being adapted tosupport chandeliers.

In witness whereof, I have hereunto set my hand this 27th day ofSeptember in the year 1912.

' ARTHUR T. PRESCOTT.

Witnesses:

D. E. Dnu'rsorr, CLAREN on V. HnMsTREnT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). C.

